Update notes for submitted changes

* res_musiconhold: Added unregister realtime moh class

cf/364cd007c237ccb3a11d40f535b1a3cab7fb29

@@ -0,0 +1,9 @@
+Code-Review+1: Kevin Harwell <kharwell@digium.com>
+Code-Review+1: Joshua Colp <jcolp@digium.com>
+Code-Review+2: George Joseph <gjoseph@digium.com>
+Verified+2: Friendly Automation
+Submitted-by: Friendly Automation
+Submitted-at: Wed, 11 Sep 2019 09:00:47 -0500
+Reviewed-on: https://gerrit.asterisk.org/c/asterisk/+/12811
+Project: asterisk
+Branch: refs/heads/master